
INSTALLATION UM344-2
September 1995
4.2 ENVIRONMENTAL CONSIDERATIONS
Many industrial processes create severe environmental conditions. The conditions at each transmitter
location must be within the specifications stated in Section 8.3.5.
The Transmitter is designed to perform in harsh conditions, however, it is prudent to locate a Transmitter
to minimize the effects of heat, vibration, shock, and electrical interference.
CAUTION
Exceeding the specified operating temperature limits can adversely affect
performance and may cause damage.
4.3 INSTALLATION CONSIDERATIONS
Sections 4.3.1 and 4.3.2 outline basic considerations needed to achieve a successful mechanical/electrical
installation. The remaining sections then provide detailed pre-installation information.
4.3.1 Mechanical
• Select the sensor input: thermocouple, millivolt, RTD, or resistance. Refer to Section 8.2 for sensor
accessories.
• Determine if an optional digital meter for local monitoring of transmitter output is required. Refer to
Section 8.1 for model designation or 8.2 for accessory part numbers.
• Determine physical mounting of Transmitter. Consider:
• Using supplied bracket for pipe or wall mounting. Refer to Sections 4.4.1 and 4.4.2.
• Transmitter-to-process mounting. Refer to Section 4.4.3.
• Clearance for installation and maintenance and for reading the optional digital meter. Refer to
Figure 8-3.
• Need to rotate optional digital meter for viewing ease. Refer to Section 4.4.4.
Refer to Figure 8-3 for transmitter dimensions and the figures in Section 4.4 for typical mechanical
installations. Refer to Section 8.3 for mechanical and environmental specifications.
Ÿ Determine if an explosion-proof or intrinsically safe installation is required. Refer to Transmitter
nameplate for electrical classifications and Sections 8.1, 8.3, and 4.6.
An intrinsically safe installation requires user-supplied intrinsic safety barriers that must be installed in
accordance with barrier manufacturer's instructions for the specific barriers used.
Transmitter certification is based on the "Entity" concept in which the user selects barriers that permit
the system to meet the entity parameters.
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